Feed-water heater.



No. 656,248. Ptented Aug. 2|, I900.

J. r. HAUSER.

FEED WATER HEATER.

(Application filed Apr. 30, 1896.)

(No Model.)

7 q m: NORRIS Psrzw: 00.. FHOTO-LITHQ, WASHINGYON. D4 0. i

UNITED STATES PATENT OFFICE.

JOHANN FRIEDRICH HAUSER, OF NUREMBERG, GERMANY.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 656,24 8, dated August21, 1900.

Application filed April 30, 1896- fo all whom it mayconocrn:

Be it known that I, J OHANN FRIEDRICH HAUSER, a subject of the GermanEmperor, and a resident of Nuremberg, Bavaria, German Empire, haveinvented certain new and useful Improvements in Steam-Engines, of whichthe following is a specification.

The present invention relates to feed-water heaters ofthat class inwhich the waste or exhaust steam from the engine is used to ac complishthe heating of the feed-Water.

The object of theinvention is to utilize to the highest degree the heatcontained in the exhaust-steam, and I have accomplished this by animproved construction and arrange ment of parts, as hereinafterdescribed.

The invention is illustrated in the accompanying drawings, in which-Figure 1 is a sectional elevation of the improved apparatus. Fig. 2 is aplan view, and Fig. 3 is a detail view, partly in section.

Referring to the drawings, K represents the boiler from which asteam=pipe 01. leads to the steam-chest of the engine-cylinder D, and asthe engine may be of any desired construction a more detaileddescription of it is not herein needed.

An exhaust-pipe 0 leads from the enginecylinder in the usual manner, andthis I connect with the dome or stand-pipe R of the feed-water heater V,which pipe is provided with a safety-valve R shown on the right of Fig.1.

From the feed-water heater V the water of condensation passes by way ofpipe 1: to an oil-filterg, from which it is drawn through the pipe h bya pump 1' and forced under pressure into a pipe it, from which it maypass by a branch it direct to the boiler or through the feed-waterheater,as hereinafterdescribed. A branch pipe it also connects the pumpof With a vessel or tank w, to which fresh water is supplied by a pipew, and a cock 10 is provided for the bottom of the filter g,

so that, if

desired, the water of condensation may be passed into the tank w, andthence to the pump 2' instead of through the filter. A branch W from thepipe it passes into the feed- Serial No. 589,701. (No model.)

water heater, within which it is extended back and forth to provide asmuch surface as possible, and finally leads out again at e, where it isprovided with a safety-valve R, and is connected by a pipe m with thepump it, which in its turn connects by pipe with the boiler. By thismeans the water of condensation taken from the heater V through pipe ois forced back by pump '5, through pipe 70 is? into the heating-coiltherein under pressure and extracts heat from the exhauststeam which iscondensing therein, said water passing then through pipe m to the pump'12, by which it is forced the boiler.

Having I claim is- 1. Incombination with a boiler and engine, afeed-Water heater having circulating-pipes therein, a pipe for theexhaust-steam leading from the engine to said heater, a pump having pipeconnections to the heater and to the circulating-pipes therein, saidpump drawing water from the heater and forcing it mixed with fresh waterthrough the circulating-pipes of the heater, and a second pump havingpipe connections with said circulating-pipes and with the boiler forforcing the water into the boiler, substantially as described.

2. In combination with a boiler and engine, a feed-waterheater havingcirculating-pipes therein, a pipe for the exhaust-steam leading from theengine to said heater having a relief-valve, a pump and connecting pipesfor drawing water from the heater and forcingit mixed with fresh Waterthrough the circulating-pipes of the heater, and a second pump throughpipe 0 into having pipe connections with said circulat ing-pipes andwith the boiler for forcing the water into the boiler, and arelief-valve in the pipe connection between said pump andcirculating-pipes, substantially as described. In witness whereof I havehereunto set my hand in presence of two witnesses. JOHANN FRIEDRICHHAUSER. Witnesses:

ANDREAS Srron, OSCAR BOOK.

